A 3-pound metal plate smashed through the windshield of a car on the Tappan Zee Bridge, nearly killing the driver – who still can’t figure out what happened.

James Gulezian, 27, a Con Ed inspector, was returning from work Friday afternoon when he heard a loud crash.

“It sounded like a bomb was going off in my car,” said Gulezian. “I had glass in my mouth, glass in my hair, glass all over my shirt.”

Gulezian said he is searching for the source of the 3-by-6-inch metal plate, which pierced the right side of his windshield, and just missed his eye. “I think it fell off the bridge, bounced off the ground and hit my windshield,” he said.

But a State Police investigation determined that the metal plate didn’t fall from the bridge.

Gulezian hadn’t even made it to the main span and was driving under an open sky, said Sgt. Rodney Rogers.

The plate must have fallen off a passing vehicle or was kicked up by another one, Rogers added.